Hitachi L100 사용자 설명서

L100 Inverter

Conf

igur

ing

Dr
iv

e P

a

ra

m

e

ters

The DC braking feature can provide 
additional stopping torque when 
compared to a normal deceleration to a 
stop. DC braking is particularly useful 
at low speeds when normal decelera-
tion torque is minimal. When you 
enable DC braking, the inverter injects 
a DC voltage into the motor windings 
during deceleration below a frequency you can specify (A_52). The braking power 
(A_54) and duration (A_55) can both be set. You can optionally specify a wait time 
before DC braking (A_53), during which the motor will free run (coast).

CAUTION: Be careful to avoid specifying a braking time that is long enough to cause 
motor overheating. If you use DC braking, we recommend using a motor with a built-in 
thermistor, and wiring it to the inverter’s thermistor input (see 

). Also refer to the motor manufacturer’s specifications for 

duty-cycle recommendations during DC braking.

A 53

A 55

t

0

+

–

A_51 DC braking enable

Two options; select codes:
00 ...Disable
01 ...Enable

✘

00

00

00

—

DCB SW       OFF

A_52 DC braking frequency 

setting

The frequency at which DC 
braking occurs,
range is 0.5 to 10 Hz

✘

0.5

0.5

0.5

Hz

DCB F     00.5Hz

A_53 DC braking wait time

The delay from the end of Run 
command to start of DC 
braking (motor free runs until 
DC braking begins)

✘

0.0

0.0

0.0

sec.

DCB WAIT    0.0s

A_54 DC braking during 

deceleration

Applied level of DC braking 
force, settable from 0 to 100% 

✘

0

0

0

%

DCB V        000

A_55 DC braking time for 

deceleration

Sets the duration for DC 
braking, range is 0.1 to 60.0 
seconds

✘

0.0

0.0

0.0

sec.

DCB T      00.0s